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Lab Meters and Probes: Calibration Standards pH Buffers

pH Buffers

pH Buffers
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Hach calibration pH buffers are available in a variety of colour-coded or colourless solutions, in different packaging types and sizes from 15 mL up to 20 L. pH buffers are also available in convenient single-use pouches (Singlet) and unit-dose powder pillows for on-site and field analyses ensuring freshness, eliminating the possibility of contamination. All Hach pH buffers are NIST traceable for optimum pH electrode calibration with an accuracy of ±0.02 pH at 25 °C. For all Hach buffers, a specific Certificate of Analysis is available for download from www.hach.com: Support/Service, Certificate of Analysis menu, using product part number and batch number.

ISO17034:2017 Certified Reference Material

For critical applications and metrology needs, Hach offers Certified Secondary pH Standard Reference Buffer Solutions, Certified Reference Material (CRM) according to DIN EN ISO 17034:2017. The certificate is reporting the exact pH buffer value with related expanded uncertainty (k=2). These Certified Reference Material ph buffer solutions are available in a wide range of values and offer a unique extended shelf-life period thanks to a premium aluminium packaging.

Certificate of Analysis from our registered calibration laboratory for Certified Reference Material (CRM) are available at https://au.hach.com/IUPAC
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